Register for telephone-call service.



E. I. GUENZEL.

REGISTER FOR TELEPHONE CALL SERVICE. APPLICATION FILED JUNE 12. 1915.

1,260,768. Patented Mar. 26,1918.

mean srnr s PATENT canton.

ERNST J. GUENZEL, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE-HALF TO SAMUEL J. RAN'SOM, OF MILWAUKEE, WISCONSIN.

Specification of Letters Patent.

Patented Mar. 26, 1918.

Application filed June 12, 1915. Serial No. 33,688.

To all whom it may concern:

Be it known that I, ERNST J. G ENZEL, a citizen of the United States, residing at Milwaukee, county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Registers for Telephone- Call Service, of which the following is a specification.

My invention relates to call registers for telephones.

The object of my invention is to provide means whereby the user of a telephone can keep an accurate record of telephone calls originating at the local station or of the amounts due to the telephone company by reason of such calls, regard being had for simplicity of structure and operation. The register may also be used for any other purpose for which a memorandum is required.

In the drawings Figure 1 is .a front elevation of a call register embodying my invention.

Fig. 2 is a vertical sectional view of the same. i

Fig. 3 is a front elevation showing a slightly modified form of construction.

Fig. 4 is a vertical sectional view of the same.

Fig. 5 is a detail sectional view, drawn on the are, line a2-w of Fig. 3, showing a fragment of the embossed ring with which the pointer interlocks.

Fig. 6 is a cross sectional fragmentary view, drawn on line yy of Fig. 3.

Like parts are identified by the same reference characters throughout the ,several views.

The disk 1 is providedwith ears 2 having apertures 3 therein to receive retaining screws, whereby the device may be secured to any suitable support. A pointer 4 is pivotally supported at the center of the disk by a rivet or eyelet 5, the pointer being spaced from the disk either by an interposed washer 6, as shown in Fig. 2, or by embossing the central'portion of the disk, as shown at 7 in Fig. 4.

The disk shown in Fig. 1 is provided with an annular row of apertures 8 between which and the outer margin of the disk is a corresponding row of numerals which, in the constructions illustrated, commence with the numeral 5 adjacent to the zero point 9 and range consecutively in multiples of five around the marginal portion of the disk to the opposite side of said zero point.

The pointer 4 is provided with a knob 11, preferably formed by indenting the pointer. This knob 11 has rounded surfaces adapted to partially enter'the holes 8 successively as the pointer is swung upon its central pivot 5, the knob 11 being located for registry with the holes successively.

One side' of the pointer is provided with an outwardly turned lip 12 and the other side of the pointer is provided with a laterally projecting member 13, which is curved in the direction of the disk intermediate of its ends and is adapted to serve as a shoe which travels along the annular zone occupied by the holes 8 and is adapted to prevent the pointer from twistin under the torsional pressure exerted by t e finger of the operator applied to the outwardly projecting lip 12.

It will of course be understood that the pointer is swung in the direction indicated by the arrow in Fig. 1 and the rounded surfaces of the knob 11 bearin upon the margins of the holes 8 under t e pressure exerted by the finger of the operator upon the lip 12, cause the ointer 4 to swing outwardly and allow t e knob to withdraw from one of the holes and pass into the next one. The pointer is composed of resilient material, whereby the knob will automatically engage in the holes successively and by frictional resistance, tend to limit the movement of the pointer so that the operator can easily adjust it ste by step from one hole to the next, depen ing upon the sense of touch to ascertain the degree ofrotation. As the knob only partially enters each of the apertures 8, it is adapted to hold the outer end of the pointer away from the surface of the disk, this end of the pointer being preferably ofiset from the disk a distance equal to the thickness of the spacing washer 6. This avoids frictional contact with the disk proper, while the shoe 13 cooperates with the knob in preventing the pointer from twisting by not only providing two bearing points, but by locatin one of them at a substantial distance in a vance of the point where the pressure is applied to the lip 12. v

Referring now to Figs. 3, 4, 5 and 6, it will be observed that the disk 1 is provided with an annular embossed ring 15, the front surface of which is provided with a series of substantially rectangular indentations 16. The pointer 4 is substantially the same as that shown in Fig. 1, except t ata V shaped projection 17 is employed in place of the knob 11, shown in Fig. 2. This proj ection 17 is preferably formed by indenting the outer surface of the pointer to form a substantially V shaped depression, the ends of which, however, are rounded as shown. This depression is not as deep as that which forms the knob 11, since the embossed ring 15 on the disk 1, of Figs. 3 and 4, serves the purpose of spacin the outer end of the pointer from the sur ace of the disk. The construction shown in Figs. 3 to 6 inclusive, is preferred, for the reason that the engage ment of the projection 17 in the indentations 16 is such that a uniform resistance will be encountered in moving the pointer from one indentation to the next and therefore thereis less danger of over rotation. I have found that with the construction shown in Fig. 1, a slight difference in the degree of entry on the part of the knob into the apertures 8, makes considerable difference in the pressure required to release the pointer and where considerable pressure is required, the pointer is apt to move so quickly that it will jump across one or more of the succeeding apertures, thereby causing errors in the registry. In the construction shown in Figs. 3 to 6, the reduction in resistance due to the fact that a short projection 17 is used is compensated by the fact that the recess 16 and the projection are elongated, thereby providing bearing surfaces of substantial length.

I claim-- A memorandum register, including the combination of a disk provided with an annular series of recesses, a series of symbols adjacent the recesses, a resilient pointer pivoted to the central portion of the disk and havin an outwardly projecting lip and an inwar y projected knob selectively engageable in said recesses to resist rotation of the pointer and movable into and out of successive recesses upon rotative pressure applied to the pointer lip, and a laterally projecting shoe on the pointer adjacent its recess engaging knob and slidably engageable with the disk at a point remote from the knob to resist torsional bending of the pointer.

In testimony whereof I ailix my signature in the presence of two witnesses.

v ERNST J. GUENZEL.

Witnesses: I

Lnvnnnr'r C. WHEELER, IR A D. BREMER. 

